Issue 30, 2018
From the journal:

Chemical Communications

Metathesis cleavage of an N[double bond, length as m-dash]N bond in benzo[c]cinnolines and azobenzenes by triply-bonded ditungsten complexes†

Hideaki Ikeda,a   Kohei Nishi,a   Hayato Tsurugi ORCID logo *a  and  Kazushi Mashima*a  

* Corresponding authors

a Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
E-mail: mashima@chem.es.osaka-u.ac.jp, tsurugi@chem.es.osaka-u.ac.jp

Abstract

A metathesis reaction of a W[triple bond, length as m-dash]W bond and an N[double bond, length as m-dash]N bond was observed by reacting a W–W triply-bonded W(III)2 complex, (tBuO)3W[triple bond, length as m-dash]W(OtBu)3 (1), with benzo[c]cinnoline derivatives to form biphenyl-linked dinuclear (imido)tungsten complexes 2–4. When azobenzene was used as the substrate, a trans to cis isomerization induced by blue-LED light was essential prior to the metathesis cleavage of the N[double bond, length as m-dash]N bond by the W[triple bond, length as m-dash]W bond of (Me2N)2(TfO)W[triple bond, length as m-dash]W(OTf)(NMe2)2 (6), affording the corresponding imido-bridged dinuclear tungsten complexes 7–9.

Graphical abstract: Metathesis cleavage of an N [[double bond, length as m-dash]] N bond in benzo[c]cinnolines and azobenzenes by triply-bonded ditungsten complexes

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Article information

DOI
https://doi.org/10.1039/C7CC08570B
Article type
Communication
Submitted
07 Nov 2017
Accepted
07 Feb 2018
First published
08 Feb 2018

Chem. Commun., 2018,54, 3709-3711

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Metathesis cleavage of an N[double bond, length as m-dash]N bond in benzo[c]cinnolines and azobenzenes by triply-bonded ditungsten complexes

H. Ikeda, K. Nishi, H. Tsurugi and K. Mashima, Chem. Commun., 2018, 54, 3709 DOI: 10.1039/C7CC08570B

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